Tuber oblate-spheroid. Stem and branchlets robust. Tendrils 12-20 cm. Leaves 5-7-foliolate; petiole 3-5 cm; leaflets obovate-lanceolate to elliptic-lanceolate, margin dentate; median leaflets 6-12 cm; petiolule 2-5 mm. Male flowers unknown. Female flowers 2 to more in a dichotomous cyme; peduncle 3-10 cm; calyx segments lanceolate, 11-13 × ca. 4 mm, apex reflexed; corolla pale yellow-green, Chinese lanternlike, 10-12 mm; segments oblong-lanceolate, 14-17 × 6-8 mm, base with 2 glands, revolute, acute at apex; ovary conical, ca. 9 × 3-4 mm. Fruit conical, 3.5-5 × 2-2.5 cm, base attenuate; fruiting pedicel only ca. 3 mm. Seeds dark brown, broadly ovate, compressed, 9-11 × 8-10 mm, 2-3 mm thick, unwinged, margin ca. 2 mm wide. Fl. Jul-Sep, fr. Sep-Nov.

● Evergreen broad-leaved forests; 1600-2400 m. SW Yunnan.